I have one of first Etrex units ( yellow with software ver 2.07 ) I use to backpacking / on my boat /on my cycle / and more. I use rechargable batterys and like how cheap it is to use.
It has taken alot of abuse (water / vibration / heat / ect.) and I have polished the screen to remove scratches more times then I can remember. I don't need an upgrade to color,maps,or whatever.